fdt* utils are needed by targets that use U-Boot FIT images for
sysupgrade. It includes all recent BCM4908 SoC routers as Broadcom
switched from CFE to U-Boot.
fdtget is required for extracting images (bootfs & rootfs) from
Broadcom's ITB. Extracted images can be then flashed to UBI volumes.
sysupgrade is core functionality so it needs dtc as part of base code
base.
Cc: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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